src/share/vm/opto/compile.cpp

*** 606,615 ****
--- 606,619 ----
      masm.bind(fakeL);
      n->as_MachBranch()->save_label(&saveL, &save_bnum);
      n->as_MachBranch()->label_set(&fakeL, 0);
    }
    n->emit(buf, this->regalloc());
+ 
+   // Emitting into the scratch buffer should not fail
+   assert (!failing(), err_msg_res("Must not have pending failure. Reason is: %s", failure_reason()));
+ 
    if (is_branch) // Restore label.
      n->as_MachBranch()->label_set(saveL, save_bnum);
  
    // End scratch_emit_size section.
    set_in_scratch_emit_size(false);